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<title>Issue 476 – Mention what -- becomes when fixing
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<p>Warn the user when Tidy changes -- to == in comments.</p>
<!-- This comment - this one, here - has some embedded hyphens that
     Tidy will not change to equals signs = -->
<!-- This comment -- this one, here -- has some embedded double hyphens that
     Tidy will change to double equals signs == -->
<!-- This comment --- this one, here --- has some embedded triple hyphens that
     Tidy will change to triple equals signs === -->
<!--- Cold Fusion uses this syntax for comments. --->
<!---->
<!-- -->
<!----->
<!--- CF --->
<!--- CF2 --->
<!---- CF3 ---->
<!----- CF4 ----->
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